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CVE-2026-50521— Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

Quick assessment

Affected
Microsoft Microsoft Edge (Chromium-based)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Edge是美国Microsoft公司的一款Windows10附带的Web浏览器。 Microsoft Edge 149.0.4022.68之前版本存在资源管理错误漏洞，该漏洞源于释放后重用，可能导致认证攻击者通过网络执行代码。

CVSS 8.3 · High EPSS 0.82% · P56

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Microsoft Microsoft Edge (Chromium-based) 1.0.0.0< 149.0.4022.68 affected
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I. Basic Information for CVE-2026-50521

Vulnerability Information
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Vulnerability Title
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Use after free in Microsoft Edge (Chromium-based) allows an authorized attacker to execute code over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Edge 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Edge是美国Microsoft公司的一款Windows10附带的Web浏览器。 Microsoft Edge 149.0.4022.68之前版本存在资源管理错误漏洞，该漏洞源于释放后重用，可能导致认证攻击者通过网络执行代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Microsoft Edge (Chromium-based) 1.0.0.0 ~ 149.0.4022.68 -

II. Public POCs for CVE-2026-50521

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III. Intelligence Information for CVE-2026-50521

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Vendor Advisories for CVE-2026-50521 (1)

IV. Related Vulnerabilities

Same product: Microsoft Edge (Chromium-based)
Same vendor: Microsoft
Same weakness: CWE-416

V. Comments for CVE-2026-50521

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